名词
中文翻译：零
同义词：
['none', 'nil', 'nothing']
例句：
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1. The number of people who attended the meeting was zero.
参加会议的人数是零。
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2. There is no need to buy a new car if you have a good one.
如果你有一辆好车，就没有必要买新车了。
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3.The teacher explained that there were no mistakes in the test paper.
老师解释说试卷上没有错误。